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Finding the Fourth Proportional to 455,380.38, 628,480.28 and 264,393.77

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Solution

The fourth proportional to 455,380.38, 628,480.28 and 264,393.77 is: 364,895.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,380.38 : 628,480.28 = 264,393.77 : x
  2. Step 2: Convert to fraction form
    455,380.38/628,480.28 = 264,393.77/x
  3. Step 3: Cross multiply
    455,380.38x = 628,480.28 × 264,393.77
  4. Step 4: Simplify right side
    455,380.38x = 166,166,266,135.49
  5. Step 5: Solve for x
    x = 166,166,266,135.49/455,380.38
  6. Step 6: Final answer
    x = 364,895.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.